Resource determination method, apparatus, communication device, and storage medium

Abstract

This disclosure relates to the telecommunications technology, and more specifically to resource determination methods, apparatus, communication apparatus, and storage media. The resource determination method includes the step of receiving a channel status information reference signal, wherein the number of configurable frequency domain resource units of the channel status information reference signal resource is greater than or equal to the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by a first frequency domain resource capable of receiving downlink transmissions. According to this disclosure, a terminal can receive a CSI-RS and determine that the number of configurable frequency domain resource units of the CSI-RS is greater than or equal to the minimum of the first number and the second number. The number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device will not be less than the minimum of the first number and the second number. This is advantageous in ensuring that the network device and the terminal have a consistent understanding of the CSI-RS resource, and that the quality of subsequent communication between the network device and the terminal is ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular, to a resource determination method, a resource determination apparatus, a communication system, a communication device, and a computer-readable storage medium.

Background Art

[0002] A network device can transmit a Channel State Information Reference Signal (CSI-RS) to a terminal and can configure a CSI-RS resource for the terminal, and the terminal can receive the CSI-RS using the CSI-RS resource configured by the network device. However, in some scenarios, when the network device configures a CSI-RS resource for the terminal, there are some problems.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Embodiments of the present disclosure provide a resource determination method, a resource determination apparatus, a communication system, a communication device, and a computer-readable storage medium to solve the technical problems in the related art.

Means for Solving the Problems

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a resource determination method executed by a terminal, including the step of receiving a Channel State Information Reference Signal based on a Channel State Information Reference Signal resource, where the number of configurable frequency domain resource units of the Channel State Information Reference Signal resource is not less than the minimum value of a first number and a second number, and the second number is the number of frequency domain resource units occupied by a first frequency domain resource capable of receiving downlink transmission.

[0005] A second aspect of the embodiments of the present disclosure provides a resource determination method performed by a network device, comprising the step of determining a minimum number of frequency domain resource units for a channel state information reference signal resource set up for a terminal, based on a minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by a first frequency domain resource from which the terminal can receive downlink transmissions.

[0006] A third aspect of the embodiments of the present disclosure provides a resource determination device configured in a terminal device, which includes a receiving module configured to receive a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units of the channel state information reference signal resource is greater than or equal to the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by a first frequency domain resource capable of receiving downlink transmissions.

[0007] A fourth aspect of the embodiments of the present disclosure is provided, a resource determination device configured in a network-side device, which includes a processing module configured to determine a minimum number of frequency domain resource units of a channel state information reference signal resource set up for a terminal, based on the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by a first frequency domain resource from which the terminal can receive downlink transmissions.

[0008] A fifth aspect of the embodiments of the present disclosure provides a communication system comprising a terminal and a network device, wherein the terminal is configured to implement the resource determination method performed by the terminal, and the network device is configured to implement the resource determination method performed by the network device.

[0009] According to a sixth embodiment of the embodiments of the present disclosure, a communication device is provided which includes a processor and memory for storing a computer program, and which implements the resource determination method described above, which is executed by a terminal when the computer program is executed by the processor.

[0010] According to a seventh embodiment of the embodiments of the present disclosure, a communication device is provided which includes a processor and memory for storing a computer program, and which implements the resource determination method that is executed by a network device when the computer program is executed by the processor.

[0011] According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided on which a computer program is stored, and on which the resource determination method described above is implemented when the computer program is executed by a processor, and which is executed by a terminal.

[0012] According to a ninth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided on which a computer program is stored, and on which the resource determination method described above is implemented when the computer program is executed by a processor, and which is executed by a network device.

[0013] According to embodiments of this disclosure, a terminal can determine a first frequency domain resource capable of receiving downlink transmissions and determine the number of frequency domain resource units occupied by the first frequency domain resource, for example, a second number. The terminal can then receive the CSI-RS and determine that the number of configurable frequency domain resource units in the CSI-RS is greater than or equal to the minimum of the first and second numbers. The number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device will not be less than the minimum of the first and second numbers. This is advantageous in ensuring that the network device and the terminal have a consistent understanding of the CSI-RS resource, thereby ensuring the quality of subsequent communication between the network device and the terminal. [Brief explanation of the drawing]

[0014] To more clearly explain the technical concepts in the embodiments of this disclosure, the following is a brief introduction to the drawings necessary for describing the embodiments. Naturally, the drawings shown below represent only a portion of the embodiments of this disclosure. Those skilled in the art can obtain other drawings based on these without any creative effort. [Figure 1] This is a schematic diagram of the application scenario relating to the embodiments of this disclosure. [Figure 2] This is a schematic diagram of the uplink and downlink resources according to the embodiments of the present disclosure. [Figure 3] This is a schematic flowchart of the resource determination method according to the embodiment of this disclosure. [Figure 4] This is a schematic diagram of a first frequency domain resource according to an embodiment of the present disclosure. [Figure 5] This is a schematic diagram of another first frequency domain resource relating to an embodiment of the present disclosure. [Figure 6] This is a schematic flowchart of another resource determination method relating to an embodiment of the present disclosure. [Figure 7] This is a schematic flowchart of another resource determination method relating to an embodiment of the present disclosure. [Figure 8]This is a schematic flowchart of the resource determination method according to the embodiment of this disclosure. [Figure 9] This is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. [Figure 10] This is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. [Figure 11] This is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. [Figure 12] This is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. [Modes for carrying out the invention]

[0015] The technical concepts in the embodiments of this disclosure will be described clearly and completely below with reference to the drawings in the embodiments of this disclosure. Clearly, the embodiments described are only a part of the embodiments of this disclosure, not all of them. All other embodiments obtained by a person skilled in the art without creative effort based on the embodiments of this disclosure are included within the scope of this disclosure.

[0016] The terms used in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. The singular forms “one kind” and “the said” as used in the embodiments of this disclosure and in the appended claims include the plural form unless the context clearly indicates otherwise. Furthermore, the terms “and / or” as used herein should be understood to refer to and encompass any or all possible combinations of the related listed items.

[0017] In the embodiments of the present disclosure, terms such as first, second, third, etc. may be used to describe various information, but it should be understood that this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may be referred to as the second information. Similarly, the second information may be referred to as the first information. Depending on the context, for example, the word "when... is used" in this specification may be interpreted as "when...", "when...", or "in response to a decision".

[0018] For the sake of brevity and ease of understanding, in this specification, terms such as "greater than", "less than", "higher than", and "lower than" are used to represent size relationships. However, those skilled in the art should understand that the term "greater than" also includes the meaning of "equal to or greater than", the term "less than" also includes the meaning of "equal to or less than", the term "higher than" also includes the meaning of "equal to or higher than", and the term "lower than" also includes the meaning of "equal to or lower than".

[0019] FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure.

[0020] As shown in FIG. 1, the embodiments of the present disclosure can be applied to a scenario where a terminal communicates with a network device, but are not limited to such a scenario. Each entity shown in FIG. 1 is exemplary. The embodiments or examples of the present disclosure may include all or part of the entities shown in FIG. 1, or may include entities other than those shown in FIG. 1. The number of entities is arbitrary and is not limited to FIG. 1. Each connection relationship shown in FIG. 1 is exemplary. Any two entities may not be connected, or may be connected, and the connection may be in any manner, either direct or indirect, wired or wireless.

[0021] In one embodiment, a network device can configure subbands for a terminal, for example, by configuring an uplink subband for the terminal in a first slot, and for example, by configuring a downlink subband for the terminal in a second slot.

[0022] The first slot includes at least one of a downlink slot and a flexible slot. The second slot includes at least one of an uplink slot and a flexible slot.

[0023] A network device can perform full-duplex communication in a first and second slot. Therefore, the first and second slots are also called subband full-duplex (SBFD) slots. The first slot is an SBFD slot configured with an uplink subband, and the second slot is an SBFD slot configured with a downlink subband. On the other hand, a terminal may be capable of performing half-duplex communication in an SBFD slot. For example, in an SBFD slot, a terminal can perform uplink transmission but cannot simultaneously receive downlink transmission, or can receive downlink transmission but cannot simultaneously perform uplink transmission. Such a terminal may also be a terminal that supports SBFD characteristics and is also called an SBFD-aware terminal.

[0024] Figure 2 is a schematic diagram of the uplink and downlink resources according to an embodiment of the present disclosure.

[0025] As shown in Figure 2, the activated bandwidth portion (BW) corresponding to the downlink time-domain unit includes the uplink subband, guard band, and downlink subband. Network devices configure the uplink subband and guard band for terminals in the downlink time-domain unit, and frequency-domain resources other than the uplink subband and guard band among the frequency-domain resources corresponding to the downlink time-domain unit may be called the downlink subband. Frequency-domain resources in the uplink subband can be used as uplink resources, frequency-domain resources in the downlink subband can be used as downlink resources, and the guard band does not have to be used for transmitting information including data and / or signals. This allows for a degree of frequency-domain separation and avoids interference between uplink and downlink communications. Alternatively, if a network device schedules only uplink transmission or only downlink transmission, frequency-domain separation of uplink and downlink by the guard band is not required, and the guard band can be used for data transmission.

[0026] In one embodiment, a time-domain unit includes at least one of a frame, subframe, slot, and symbol. The symbol may be an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0027] Furthermore, while the embodiments of this disclosure are applicable when a guard band is provided between the uplink subband and the downlink subband, they are also applicable when a guard band is not provided between the uplink subband and the downlink subband.

[0028] In one embodiment, a network device can configure a CSI-RS resource for a terminal, and the terminal can receive CSI-RS using the CSI-RS resource configured by the network device.

[0029] Because related technologies do not consider SBFD slots, BWPs do not have uplink and / or downlink subbands, and the minimum frequency domain resources that can be configured for CSI-RS resources are determined based on the BWP. However, if a network device configures uplink and / or downlink subbands for a terminal in the BWP, then SBFD slots will exist. In other words, not all frequency domain resources in a single BWP are used for downlink communication, nor are they all used for uplink communication.

[0030] Taking a downlink slot as an example, the BWP corresponding to the downlink slot may have an uplink subband configured. Therefore, the resources actually available for CSI-RS transmission are the frequency domain resources in the BWP other than the uplink subband. For example, if guard bands are not considered, the resources used for CSI-RS transmission are the downlink subband. If the minimum value of frequency domain resources that can be configured for a CSI-RS resource is still determined based on the BWP, it may be determined that the minimum value of frequency domain resources that can be configured for a CSI-RS resource is equal to the BWP. However, the terminal cannot actually receive CSI-RS on the uplink subband within the BWP. In other words, the frequency domain resources that the terminal can actually use to receive CSI-RS are fewer than those in the BWP. This can lead to a mismatch in understanding of CSI-RS resources between network devices and terminals.

[0031] In one embodiment, the frequency domain resources that can be configured in a CSI-RS resource can be represented by the number of frequency domain resource units. For example, a frequency domain resource unit includes at least one of a resource block (RB) and a resource element (RE).

[0032] In one embodiment, the terminal includes, but is not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices. The terminal can communicate with network devices. Network devices include, but are not limited to, network devices in communication systems such as 4G, 5G, and 6G, such as base stations and core networks.

[0033] Figure 3 is a schematic flowchart of a resource determination method according to one embodiment of the present disclosure. The resource determination method shown in this embodiment can be executed by a terminal.

[0034] As shown in Figure 3, the resource determination method may include the following step S301.

[0035] In step S301, a Channel State Information Reference Signal (CSI-RS) is received based on the Channel State Information Reference Signal resource, and the number of configurable frequency domain resource units of the Channel State Information Reference Signal resource is greater than or equal to the minimum of the first number and the second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmissions.

[0036] In one embodiment, when a network device configures CSI-RS resources for a terminal, it can first determine a first frequency domain resource from which the terminal can receive downlink transmissions, and then determine a second number of frequency domain resource units occupied by the first frequency domain resource. Subsequently, based on the minimum of the first and second numbers, it can determine the minimum number of frequency domain resource units for the CSI-RS resources configured for the terminal. In this case, the number of frequency domain resource units for the CSI-RS resources configured for the terminal by the network device will not be less than the minimum of the first and second numbers.

[0037] Similarly, a terminal can determine a first frequency domain resource capable of receiving downlink transmissions and the number of frequency domain resource units occupied by the first frequency domain resource, for example, a number referred to as the second number. The terminal can then receive the CSI-RS and determine that the number of configurable frequency domain resource units in the CSI-RS is greater than or equal to the minimum of the first and second numbers, or it may be expressed as not expecting the number of configurable frequency domain resource units in the CSI-RS resource to be less than the minimum of the first and second numbers. This is therefore advantageous in ensuring that the network device and the terminal have a consistent understanding of the CSI-RS resource, thereby ensuring the quality of subsequent communication between the network device and the terminal.

[0038] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency-domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency-domain resource units for a CSI-RS resource is greater than or equal to the minimum of the first and second numbers. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency-domain resource that can receive downlink transmissions, determining the number of frequency-domain resource units occupied by the first frequency-domain resource, determining that the number of configurable frequency-domain resource units for CSI-RS is greater than or equal to the minimum of the first and second numbers, and not expecting that the number of configurable frequency-domain resource units for CSI-RS is less than the minimum of the first and second numbers.

[0039] In one embodiment, the first number is determined based on a predefined rule, or the first number is set by a network device. For example, if the frequency domain resource unit is an RB, the first number may be 24.

[0040] For example, if a terminal determines that the number of frequency domain resource units occupied by a first frequency domain resource capable of receiving downlink transmissions is 10, i.e., the second number is 10, then the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is at least min{24, 10}, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than min{24, 10}. Since min{24, 10} is 10, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is at least 10, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than 10.

[0041] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency-domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency-domain resource units for a CSI-RS resource is min{24, 10} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency-domain resource that can receive downlink transmissions, determining the number of frequency-domain resource units occupied by the first frequency-domain resource, determining that the number of configurable frequency-domain resource units for CSI-RS is min{24, 10} or greater, and not expecting the number of configurable frequency-domain resource units for CSI-RS to be less than min{24, 10}.

[0042] The following describes, using several examples, a first frequency domain resource capable of receiving downlink transmissions.

[0043] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes at least one of a downlink subband and a guard band.

[0044] In one embodiment, the downlink subband includes at least one of the following: frequency domain resources other than the uplink subband set in the downlink slot; frequency domain resources other than the uplink subband and guard band set in the downlink slot; frequency domain resources other than the uplink subband set in the flexible slot; frequency domain resources other than the uplink subband and guard band set in the flexible slot; the downlink subband set in the uplink slot; and the downlink subband set in the flexible slot.

[0045] For example, a network device configures an uplink subband for a terminal in a downlink slot. The frequency domain resources corresponding to the downlink slot, excluding the uplink subband, may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include the frequency domain resources corresponding to the downlink slot, excluding the uplink subband.

[0046] For example, a network device configures an uplink subband and a guard band for a terminal in a downlink slot. Frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the downlink slot may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the downlink slot.

[0047] For example, a network device configures an uplink subband for a terminal in a flexible slot. Frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot may be called downlink subbands. The terminal can receive downlink transmissions in the downlink subbands. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot.

[0048] For example, a network device configures an uplink subband and a guard band for a terminal in a flexible slot. Frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the flexible slot may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the flexible slot.

[0049] For example, a network device configures a downlink subband for a terminal in an uplink slot. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resource capable of receiving downlink transmissions includes the downlink subband in the uplink slot.

[0050] For example, a network device configures a downlink subband for a terminal in a flexible slot. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resource capable of receiving downlink transmissions includes the downlink subband in the flexible slot.

[0051] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a continuous frequency domain resource unit.

[0052] In other words, if a CSI-RS resource includes a continuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions may include a continuous frequency domain resource capable of receiving downlink transmissions.

[0053] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband, the terminal can determine the downlink subband in which the starting frequency domain resource unit is located as the first frequency domain resource.

[0054] For example, if an activated BWP has only one downlink subband, the terminal can determine this downlink subband as the first frequency domain resource. Based on the embodiment shown in Figure 2, an activated BWP has two downlink subbands, and the two downlink subbands are not contiguous. If the CSI-RS resource includes a continuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions may be one of these two downlink subbands. Therefore, if there are multiple continuous frequency domain resources capable of receiving downlink transmissions, considering that a CSI-RS resource can only contain continuous frequency domain resources, the CSI-RS resource can only transmit over one of the continuous frequency domain resources, and the terminal needs to determine one continuous frequency domain resource as the first frequency domain resource.

[0055] The following describes a method for determining one continuous frequency domain resource as the first frequency domain resource from among multiple continuous frequency domain resources capable of receiving downlink transmissions, using several embodiments.

[0056] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, on which the starting frequency domain resource unit of the channel state information reference signal resource is located.

[0057] A network device can send configuration information for CSI-RS resources to a terminal. The terminal can then determine the CSI-RS resources based on this configuration information. For example, the configuration information may include at least one of the following: the number of starting frequency domain resource units and the number of continuous frequency domain resource units for the CSI-RS resources.

[0058] The terminal can determine, from among multiple continuous frequency domain resources capable of receiving downlink transmissions, the continuous frequency domain resource where the starting frequency domain resource unit is located and capable of receiving downlink transmissions as the first frequency domain resource.

[0059] For example, the number of frequency domain resource units to which the starting frequency domain resource unit of the CSI-RS resource is offset relative to the starting frequency domain resource unit of the common resource block CRB#0 may be a positive integer multiple of the first number.

[0060] Figure 4 is a schematic diagram of a first frequency domain resource according to an embodiment of the present disclosure.

[0061] As shown in Figure 4, based on the embodiment shown in Figure 2, two downlink subbands can be determined from the activated BWP and designated as downlink subband #1 and downlink subband #2, respectively. If the terminal determines, based on the configuration information of the CSI-RS resource, that the starting frequency domain resource unit of the CSI-RS resource is located in downlink subband #1, it can determine downlink subband #1 as the first frequency domain resource capable of receiving downlink transmissions.

[0062] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 4, for instance, downlink subband #1 contains 12 RBs and downlink subband #2 contains 10 RBs, and based on the above analysis, if downlink subband #1 is the first frequency domain resource capable of receiving downlink transmissions, then the second number is equal to the number of RBs included in downlink subband #1, i.e., 12 RBs. In this case, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is min{24, 12} or greater, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than min{24, 12}. Since min{24, 12} is 12, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is min{24, 12} or greater, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than 12.

[0063] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency-domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency-domain resource units for a CSI-RS resource is min{24, 12} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency-domain resource that can receive downlink transmissions, determining the number of frequency-domain resource units occupied by the first frequency-domain resource, determining that the number of configurable frequency-domain resource units for CSI-RS is min{24, 12} or greater, and not expecting that the number of configurable frequency-domain resource units for CSI-RS is less than min{24, 12}.

[0064] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the terminal can determine the downlink subband on which the starting frequency domain resource unit is located and the guard band connected to the downlink subband as the first frequency domain resource.

[0065] For example, if the starting frequency domain resource unit of a CSI-RS resource is located in downlink subband #1 or guard band #1, then downlink subband #1 and guard band #1 connected to downlink subband #1 can be determined as the first frequency domain resource capable of receiving downlink transmissions. The second number is equal to the sum of the number of RBs included in downlink subband #1 and guard band #1, i.e., 12 + 2 = 14. In this case, the terminal determines that the number of configurable frequency domain resource units of the CSI-RS is at least min{24, 14} and / or does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than min{24, 14}. Since min{24, 14} is 14, the terminal determines that the number of configurable frequency domain resource units of the CSI-RS is at least min{24, 14} and / or does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than 14.

[0066] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency domain resource units for a CSI-RS resource is min{24, 14} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency domain resource that can receive downlink transmissions, determining the number of frequency domain resource units occupied by the first frequency domain resource, determining that the number of configurable frequency domain resource units for CSI-RS is min{24, 14} or greater, and not expecting the number of configurable frequency domain resource units for CSI-RS to be less than min{24, 14}.

[0067] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions.

[0068] If a terminal has multiple continuous frequency domain resources capable of receiving downlink transmissions, the terminal can determine the number of frequency domain units occupied by each continuous frequency domain resource and designate the continuous frequency domain resource with the fewest occupied frequency domain units as the first frequency domain resource.

[0069] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes downlink subbands, the terminal can determine the number of frequency domain units occupied by each downlink subband and determine the downlink subband with the fewest occupied frequency domain units as the first frequency domain resource.

[0070] Figure 5 is a schematic diagram of another first frequency domain resource according to an embodiment of the present disclosure.

[0071] As shown in Figure 5, based on the embodiment shown in Figure 2, two downlink subbands can be determined from the activated BWP, which can be designated as downlink subband #1 and downlink subband #2. Based on the configuration information of the CSI-RS resource, the terminal can determine that the starting frequency domain resource unit of the CSI-RS resource is located in downlink subband #2, and can determine downlink subband #2 as the first frequency domain resource capable of receiving downlink transmissions.

[0072] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 5, for instance, downlink subband #1 contains 12 RBs and downlink subband #2 contains 10 RBs, so downlink subband #2 occupies the fewest number of RBs among the two downlink subbands. Therefore, downlink subband #2 can be designated as the first frequency domain resource capable of receiving downlink transmissions, and the second number is 10. The terminal then determines that the number of configurable frequency domain resource units for the CSI-RS is at least min{24, 10} and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than min{24, 10}. Since min{24, 10} is 10, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is at least min{24, 10} and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than 10.

[0073] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency domain resource units for a CSI-RS resource is min{24, 10} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency domain resource that can receive downlink transmissions, determining the number of frequency domain resource units occupied by the first frequency domain resource, determining that the number of configurable frequency domain resource units for CSI-RS is min{24, 10} or greater, and not expecting that the number of configurable frequency domain resource units for CSI-RS is less than min{24, 10}.

[0074] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the terminal may determine the downlink subband with the fewest occupied frequency domain units and the guard band connected to that downlink subband as the first frequency domain resource.

[0075] For example, if the number of frequency domain units occupied by downlink subband #2 and guard band #2 is the smallest of the number of frequency domain units occupied by downlink subband #1 and guard band #1 connected to downlink subband #1, then downlink subband #2 and guard band #2 connected to downlink subband #2 can be determined as the first frequency domain resource capable of receiving downlink transmissions. If the second number is equal to the sum of the number of RBs included in downlink subband #2 and guard band #2, i.e., 10 + 2 = 12, then the terminal determines that the number of configurable frequency domain resource units for CSI-RS is min{24, 12} or greater, and / or does not expect the number of configurable frequency domain resource units for CSI-RS resources to be less than min{24, 12}. Since min{24, 12} is 12, the terminal determines that the number of configurable frequency domain resource units for CSI-RS is at least min{24, 12}, and / or does not expect the number of configurable frequency domain resource units for CSI-RS resources to be less than 12.

[0076] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency-domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency-domain resource units for a CSI-RS resource is min{24, 12} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency-domain resource that can receive downlink transmissions, determining the number of frequency-domain resource units occupied by the first frequency-domain resource, determining that the number of configurable frequency-domain resource units for CSI-RS is min{24, 12} or greater, and not expecting that the number of configurable frequency-domain resource units for CSI-RS is less than min{24, 12}.

[0077] The method for determining one continuous frequency domain resource as the first frequency domain resource from among multiple continuous frequency domain resources capable of receiving downlink transmissions is not limited to the method described in the above embodiment. For example, the first frequency domain resource capable of receiving downlink transmissions includes the continuous frequency domain resource with the largest number of occupied frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource indicated by a network device (for example, the network device can indicate the identifier, frequency domain range, etc. of the frequency domain resource) among all continuous frequency domain resources capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource whose number of occupied frequency domain units is an integer multiple of a first number (for example, 4) among all continuous frequency domain resources capable of receiving downlink transmissions. If multiple resources exist, they can be determined according to other conditions (for example, identifier, starting frequency domain resource unit). For example, the continuous frequency domain resource that satisfies the above conditions and corresponds to the smallest identifier is determined as the first frequency domain resource capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes all continuous frequency domain resources capable of receiving downlink transmissions whose identifier is a pre-set identifier (e.g., the smallest identifier or the largest identifier).

[0078] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a discontinuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource may include a discontinuous frequency domain resource unit.

[0079] In other words, if a CSI-RS resource can include discontinuous frequency domain resource units, then a first frequency domain resource capable of receiving downlink transmissions can include discontinuous frequency domain resources capable of receiving downlink transmissions. This does not mean that the first frequency domain resource cannot include continuous frequency domain resources capable of receiving downlink transmissions, but rather that the first frequency domain resource can include both continuous frequency domain resources capable of receiving downlink transmissions and discontinuous frequency domain resources capable of receiving downlink transmissions.

[0080] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband, the terminal can determine the number of frequency domain units occupied by all the downlink subbands as the first frequency domain resource.

[0081] For example, if an activated BWP has only one downlink subband, the terminal can determine this downlink subband as the first frequency domain resource. Based on the embodiment shown in Figure 2, an activated BWP has two downlink subbands, and the two downlink subbands are not contiguous. In this case, if the CSI-RS resource includes a discontinuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions may be these two downlink subbands.

[0082] Using Figure 5 as an example, and based on the embodiment shown in Figure 2, the terminal can determine two downlink subbands, which can be designated as downlink subband #1 and downlink subband #2. The terminal can then determine downlink subband #1 and downlink subband #2 as first frequency domain resources capable of receiving downlink transmissions.

[0083] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 5, for instance, downlink subband #1 contains 12 RBs, downlink subband #2 contains 10 RBs, and the total number of RBs in the two downlink subbands is 22, so the second number is 22. In this case, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is at least min{24, 22}, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than min{24, 22}. Since min{24, 22} is 22, the terminal determines that the number of configurable frequency domain resource units for the CSI-RS is at least min{24, 22}, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than 22.

[0084] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency domain resource units for a CSI-RS resource is min{24, 22} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency domain resource that can receive downlink transmissions, determining the number of frequency domain resource units occupied by the first frequency domain resource, determining that the number of configurable frequency domain resource units for CSI-RS is min{24, 22} or greater, and not expecting that the number of configurable frequency domain resource units for CSI-RS is less than min{24, 22}.

[0085] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the terminal can determine a discontinuous frequency domain resource from which downlink transmissions can be received, including a downlink subband and a guard band, as the first frequency domain resource.

[0086] For example, if a discontinuous frequency domain resource includes downlink subband #1, downlink subband #2, guard band #1, and guard band #2, then downlink subband #1 and guard band #1 connected to downlink subband #1, and downlink subband #2 and guard band #2 connected to downlink subband #2 can be determined as a first frequency domain resource capable of receiving downlink transmissions. The second number is equal to the sum of the number of RBs included in downlink subband #1, guard band #1, downlink subband #2, and guard band #2, i.e., 12 + 2 + 10 + 2 = 26. In this case, the terminal determines that the number of configurable frequency domain resource units of the CSI-RS is at least min{24, 26}, and / or does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than min{24, 26}. Since min{24, 26} is 24, the terminal determines that the number of configurable frequency domain resource units for CSI-RS is at least min{24, 26}, and / or does not expect the number of configurable frequency domain resource units for CSI-RS resources to be less than 24.

[0087] Alternatively, the terminal determines the CSI-RS resource based on protocol agreement or network device configuration information and receives CSI-RS based on the CSI-RS resource. The relationship between the number of configurable frequency-domain resource units for a CSI-RS resource and the minimum of the first and second numbers is agreed upon by the protocol or determined by the network device, and does not require terminal involvement. For example, the number of configurable frequency-domain resource units for a CSI-RS resource is min{24, 26} or greater. In this case, the terminal does not need to perform one or more of the following actions: determining a first frequency-domain resource that can receive downlink transmissions, determining the number of frequency-domain resource units occupied by the first frequency-domain resource, determining that the number of configurable frequency-domain resource units for CSI-RS is min{24, 26} or greater, and not expecting the number of configurable frequency-domain resource units for CSI-RS to be less than min{24, 26}.

[0088] In one embodiment, the second number is an integer multiple of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number.

[0089] In one embodiment, the terminal does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than the minimum of the first and second numbers, and / or the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device will not be less than the minimum of the first and second numbers, but the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0090] If the number of frequency domain resource units of a CSI-RS resource configured for a terminal by a network device is greater than a second number, the terminal may determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number, i.e., the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission is equal to the second number, in order to ensure that the CSI-RS resource actually used for CSI-RS transmission does not exceed the frequency domain range in which the terminal can receive CSI-RS.

[0091] Since the number of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first number, for example, if the frequency domain resource unit is RB and the first number is 4, the number of RBs occupied by the CSI-RS resource must be equal to 4n, where n is a positive integer. Thus, the terminal can determine that the second number is an integer multiple of the first number, and / or does not expect the second number to be a number other than an integer multiple of the first number. In this case, the second number is an integer multiple of the first number, for example, 4n. This ensures that the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission at the terminal is a positive integer multiple of the first number, and that the CSI-RS resource actually used for CSI-RS transmission does not exceed the frequency domain range at which the terminal can receive CSI-RS.

[0092] For example, the second number is equal to 8, that is, twice 4, and the number of frequency domain resource units in the CSI-RS resources configured for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of frequency domain resource units contained in the CSI-RS resources actually used for CSI-RS transmission is equal to 8.

[0093] Figure 6 is a schematic flowchart of another resource determination method according to an embodiment of the present disclosure. The resource determination method shown in this embodiment can be executed by a terminal. As shown in Figure 6, the resource determination method further includes the following step S601.

[0094] In step S601, it is determined that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value of the second number among integer multiples of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number.

[0095] In one embodiment, the terminal does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than the minimum of the first and second numbers, and / or the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is not less than the minimum of the first and second numbers, but the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0096] However, if the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is the maximum integer multiple of the first number that is less than or equal to the second number, that is, the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission is the maximum integer multiple of the first number that is less than or equal to the second number.

[0097] The number of frequency domain resource units occupied by the CSI-RS resource must be a positive integer multiple of the first number. For example, if the frequency domain resource unit is RB and the first number is 4, the number of RBs occupied by the CSI-RS resource must be equal to 4n, where n is a positive integer. On the other hand, if the second number is not an integer multiple of the first number, the terminal can determine that the number of frequency domain resource units included in the CSI-RS resource is the maximum integer multiple of the first number that is less than or equal to the second number. This ensures that the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission is a positive integer multiple of the first number, and that the CSI-RS resource actually used for CSI-RS transmission does not exceed the frequency domain range in which the terminal can receive CSI-RS.

[0098] If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than a second number, and the second number is an integer multiple of the first number, the terminal can determine that the number of RBs occupied by the CSI-RS resource is equal to the second number.

[0099] If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than a second number, and the second number is not an integer multiple of the first number, the terminal can determine a value equal to an integer multiple of the first number from a value less than the second number, determine a maximum value from a value equal to an integer multiple of the first number (for example, 4), and determine that the number of RBs occupied by the CSI-RS resource is equal to that maximum value.

[0100] For example, if the second number is equal to 8, which is a positive integer multiple of 4, and the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is 12, which is greater than 8, then the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to 8.

[0101] For example, suppose the second number is equal to 10 and is not a positive integer multiple of 4. The number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is 12 and is greater than 10. In this case, the terminal can determine from the values ​​less than 10 that are equal to 4n, which are 4 and 8, and from 4 and 8 it can determine the maximum value of 8, and then determine that the number of RBs occupied by the CSI-RS resource is equal to 8.

[0102] Figure 7 is a schematic flowchart of another resource determination method according to an embodiment of the present disclosure. The resource determination method shown in this embodiment can be executed by a terminal. As shown in Figure 7, the resource determination method further includes step S701.

[0103] In step S701, if the number of frequency domain resource units of the channel state information reference signal resource is greater than the second number, it is determined that the number of frequency domain resource units of the channel state information reference signal resource is equal to the second number.

[0104] In one embodiment, the terminal does not expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than the minimum of the first and second numbers, and / or the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device will not be less than the minimum of the first and second numbers, but the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device may be greater than or equal to the second number.

[0105] On the other hand, if the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number. This ensures that the CSI-RS is transmitted by the network device and received by the terminal within the first frequency domain resource range in which downlink transmissions can be received, and prevents the network device from transmitting the CSI-RS outside the first frequency domain resource range in which the terminal can receive downlink transmissions, and the terminal from receiving it.

[0106] In one embodiment, the terminal can determine a value equal to an integer multiple of a first number from a value less than or equal to a second number, and determine a maximum value from a value equal to an integer multiple of the first number (e.g., 4), and the terminal can determine that the number of configurable frequency domain resource units of the CSI-RS is greater than or equal to the minimum of the first number and the maximum value, and / or does not expect that the number of configurable frequency domain resource units of the CSI-RS resource is less than the minimum of the first number and the maximum value.

[0107] For example, the first number is equal to 4, the second number is 24, and the third number is 10. The terminal can determine that the values ​​less than or equal to the second number that are integer multiples of the first number are 8 and 4, with 8 being the maximum value. In this case, the terminal can determine that the number of configurable frequency domain resource units for the CSI-RS is greater than or equal to min{24,8}, and / or does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than min{24,8}=8.

[0108] In one embodiment, the second number is greater than or equal to the first number, the number of configurable frequency domain resource units of the CSI-RS resource is greater than or equal to the minimum of the first and third numbers, where the third number is the number of frequency domain resource units occupied by the BWP on which the first frequency domain resource capable of receiving downlink transmissions is located, and / or, the terminal does not expect the second number to be less than the first number, nor does it expect the number of configurable frequency domain resource units of the CSI-RS resource to be less than the minimum of the first and third numbers. If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the third number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number.

[0109] For example, the minimum number of configurable frequency domain resource units for a CSI-RS resource is min{first number, third number}, and the terminal has a second number of RBs occupied by the first frequency domain resource capable of receiving downlink transmissions. Since the third number is greater than or equal to the second number, and the second number is greater than or equal to the first number, it can be determined that the third number is greater than or equal to the first number, and therefore the minimum number of configurable frequency domain resource units for a CSI-RS resource can be set to the first number. Because the third number is greater than or equal to the number of configurable frequency domain resource units for a CSI-RS resource, the conditions are met that the minimum number of configurable frequency domain resource units for a CSI-RS resource is min{first number, third number}, and the minimum number of configurable frequency domain resource units for a CSI-RS resource (the first number) lies within the range of the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmissions (the second number). Therefore, the network side can configure the corresponding CSI-RS resources while satisfying the above conditions, so that the frequency domain resource unit where the CSI-RS resources are configured is located within the first frequency domain resource range, and it is ensured that the terminal can receive CSI-RS within the frequency domain range it can receive.

[0110] In one embodiment, the number of configurable frequency domain resource units for a CSI-RS resource is greater than or equal to the minimum of a first number and a third number, where the third number is the number of frequency domain resource units occupied by the BWP on which the first frequency domain resource capable of receiving downlink transmissions is located, and / or the number of frequency domain resource units occupied by the downlink BWP on which the terminal is located. Alternatively, the terminal does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than the minimum of the first number and the third number. If the number of frequency domain resource units for a CSI-RS resource configured for a terminal by a network device is greater than a second number, the terminal can determine that the number of frequency domain resource units for the CSI-RS resource is equal to the second number. Since the second number is determined based on the embodiments described above, no further explanation is provided in this disclosure.

[0111] Figure 8 is a schematic flowchart of a resource determination method according to an embodiment of the present disclosure. The resource determination method shown in this embodiment can be executed by a network device. The network device can communicate with terminals. The network device includes, but is not limited to, base stations in a communication system such as 4G base stations, 5G base stations, and 6G base stations. The terminals include, but are not limited to, communication devices such as mobile phones, tablet computers, wearable devices, sensors, and Internet of Things devices.

[0112] As shown in Figure 8, the resource determination method may include the following step S801.

[0113] In step S801, the minimum number of frequency domain resource units for the channel state information reference signal resource set up for the terminal is determined based on the minimum of the first number and the second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource from which the terminal can receive downlink transmissions.

[0114] In one embodiment, when a network device configures CSI-RS resources for a terminal, it can first determine a first frequency-domain resource from which the terminal can receive downlink transmissions, and then determine a second number of frequency-domain resource units occupied by the first frequency-domain resource. Subsequently, based on the minimum of the first and second numbers, it can determine the minimum number of frequency-domain resource units for the CSI-RS resources configured for the terminal. In this case, the number of frequency-domain resource units for the CSI-RS resources configured for the terminal by the network device will not be less than (i.e., greater than or equal to) the minimum of the first and second numbers. This is advantageous in ensuring that the network device and the terminal have a consistent understanding of the CSI-RS resources, and that the quality of communication between the network device and the terminal is ensured thereafter.

[0115] Similarly, a terminal can determine a first frequency domain resource capable of receiving downlink transmissions and the number of frequency domain resource units occupied by that first frequency domain resource, for example, a number called the second number. Alternatively, the terminal does not expect the number of configurable frequency domain resource units for the CSI-RS resource to be less than the minimum of the first and second numbers.

[0116] In one embodiment, the first number is determined based on a predefined rule, or the first number is set by a network device. For example, if the frequency domain resource unit is an RB, the first number can be 24.

[0117] For example, if a network device determines that the number of frequency domain resource units occupied by a first frequency domain resource from which a terminal can receive downlink transmissions is 10, i.e., the second number is 10, then the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal by the network device is min{24, 10}. Since min{24, 10} is 10, the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal is 10.

[0118] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes at least one of a downlink subband and a guard band.

[0119] In one embodiment, the downlink subband includes at least one of the following: frequency domain resources other than the uplink subband set in the downlink slot; frequency domain resources other than the uplink subband and guard band set in the downlink slot; frequency domain resources other than the uplink subband set in the flexible slot; frequency domain resources other than the uplink subband and guard band set in the flexible slot; the downlink subband set in the uplink slot; and the downlink subband set in the flexible slot.

[0120] For example, a network device configures an uplink subband for a terminal in a downlink slot, and frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the downlink slot may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the downlink slot.

[0121] For example, a network device configures an uplink subband and a guard band for a terminal in a downlink slot, and frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the downlink slot may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resource capable of receiving downlink transmissions includes frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the downlink slot.

[0122] For example, a network device may configure an uplink subband for a terminal in a flexible slot, and frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot may be called the downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband among the frequency domain resources corresponding to the flexible slot.

[0123] For example, a network device configures an uplink subband and a guard band for a terminal in a flexible slot, and frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the flexible slot may be called a downlink subband. The terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resources capable of receiving downlink transmissions include frequency domain resources other than the uplink subband and guard band among the frequency domain resources corresponding to the flexible slot.

[0124] For example, a network device configures a downlink subband for a terminal in an uplink slot, and the terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resource capable of receiving downlink transmissions includes the downlink subband in the uplink slot.

[0125] For example, a network device configures a downlink subband for a terminal in a flexible slot, and the terminal can receive downlink transmissions in the downlink subband. In this case, the first frequency domain resource capable of receiving downlink transmissions includes the downlink subband in the flexible slot.

[0126] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a continuous frequency domain resource unit.

[0127] In other words, if a CSI-RS resource includes a continuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions may include a continuous frequency domain resource capable of receiving downlink transmissions.

[0128] In one embodiment, if a first frequency domain resource on which a terminal can receive downlink transmissions includes a downlink subband, the network device can determine the downlink subband on which the starting frequency domain resource unit is located as the first frequency domain resource.

[0129] For example, if an activated BWP has only one downlink subband, the network device can determine this downlink subband as the first frequency domain resource. On the other hand, according to the embodiment shown in Figure 2, an activated BWP has two downlink subbands, and the two downlink subbands are not contiguous. In this case, if the CSI-RS resource includes a continuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions can be one of these two downlink subbands. Therefore, if there are multiple continuous frequency domain resources capable of receiving downlink transmissions, considering that a CSI-RS resource can only contain continuous frequency domain resources, the CSI-RS resource can only transmit over one of the continuous frequency domain resources, and the network device needs to determine one continuous frequency domain resource as the first frequency domain resource.

[0130] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, on which the starting frequency domain resource unit of the channel state information reference signal resource is located.

[0131] A network device can send configuration information for CSI-RS resources to a terminal, and the terminal can determine the CSI-RS resources based on this configuration information. For example, the configuration information includes at least one of the number of starting frequency domain resource units and continuous frequency domain resource units for the CSI-RS resources.

[0132] A network device can determine, from among multiple continuous frequency domain resources of terminals capable of receiving downlink transmissions, the continuous frequency domain resource where the starting frequency domain resource unit is located and capable of receiving downlink transmissions as the first frequency domain resource.

[0133] For example, the number of frequency domain resource units to which the starting frequency domain resource unit of the CSI-RS resource is offset relative to the starting frequency domain resource unit of the common resource block CRB#0 may be a positive integer multiple of the first number.

[0134] As shown in Figure 4, two downlink subbands can be determined from the activated BWP, designated as downlink subband #1 and downlink subband #2. Based on the configuration information of the CSI-RS resource sent to the terminal, the network device determines that the starting frequency domain resource unit of the CSI-RS resource is located in downlink subband #1. Then, downlink subband #1 can be determined as the first frequency domain resource capable of receiving downlink transmissions.

[0135] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 4, for instance, downlink subband #1 contains 12 RBs and downlink subband #2 contains 10 RBs. Based on the above analysis, if downlink subband #1 is designated as the first frequency domain resource capable of receiving downlink transmissions, then the second number is 12, which is equal to the number of RBs included in downlink subband #1, i.e., 12 RBs. The network device can then determine that the minimum number of frequency domain resource units for a CSI-RS resource configured for a terminal is min{24, 12}. Since min{24, 12} is 12, the minimum number of frequency domain resource units for a CSI-RS resource configured for a terminal is 12.

[0136] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the network device can determine the downlink subband on which the starting frequency domain resource unit is located and the guard band connected to the downlink subband as the first frequency domain resource.

[0137] For example, if the starting frequency domain resource unit of a CSI-RS resource is located in downlink subband #1 or guard band #1, then downlink subband #1 and guard band #1 connected to downlink subband #1 can be determined as the first frequency domain resource capable of receiving downlink transmissions. The second number is equal to the sum of the number of RBs included in downlink subband #1 and guard band #1, i.e., 12 + 2 = 14. In this case, the network device can determine that the minimum number of frequency domain resource units for a CSI-RS resource configured for a terminal is min{24, 14}. Since min{24, 14} is 14, the minimum number of frequency domain resource units for a CSI-RS resource configured for a terminal is 14.

[0138] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes the continuous frequency domain resource that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions.

[0139] If a terminal has multiple continuous frequency domain resources capable of receiving downlink transmissions, the network device can determine the number of frequency domain units occupied by each continuous frequency domain resource and designate the continuous frequency domain resource with the fewest occupied frequency domain units as the first frequency domain resource.

[0140] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes downlink subbands, the network device can determine the number of frequency domain units occupied by each downlink subband and determine the downlink subband with the fewest occupied frequency domain units as the first frequency domain resource.

[0141] As shown in Figure 5, two downlink subbands can be determined from the activated BWP, designated as downlink subband #1 and downlink subband #2. Based on the configuration information of the CSI-RS resource sent to the terminal, the network device can determine that the starting frequency domain resource unit of the CSI-RS resource is located in downlink subband #2, and can then determine downlink subband #2 as the first frequency domain resource capable of receiving downlink transmissions.

[0142] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 5, for instance, downlink subband #1 contains 12 RBs and downlink subband #2 contains 10 RBs. Since downlink subband #2 occupies the fewest number of RBs among the two downlink subbands, downlink subband #2 can be designated as the first frequency domain resource capable of receiving downlink transmissions. Therefore, the second number is 10, and the network device can determine that the minimum number of frequency domain resource units for the CSI-RS resources configured for the terminal is min{24, 10}. Since min{24, 10} is 10, the minimum number of frequency domain resource units for the CSI-RS resources configured for the terminal is 10.

[0143] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the network device may determine the downlink subband with the fewest occupied frequency domain units and the guard band connected to that downlink subband as the first frequency domain resource.

[0144] For example, of the number of frequency domain units occupied by downlink subband #1 and guard band #1 connected to downlink subband #1, and the number of frequency domain units occupied by downlink subband #2 and guard band #2 connected to downlink subband #2, the number of frequency domain units occupied by downlink subband #2 and guard band #2 connected to downlink subband #2 is the smallest, so downlink subband #2 and guard band #2 connected to downlink subband #2 can be determined as the first frequency domain resource capable of receiving downlink transmissions. If the second number is equal to the sum of the number of RBs included in downlink subband #2 and guard band #2, i.e., 10 + 2 = 12, then the network device can determine that the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal is min{24, 12}. Since min{24, 12} is 12, the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal is 12.

[0145] The method for determining one continuous frequency domain resource as the first frequency domain resource from among multiple continuous frequency domain resources capable of receiving downlink transmissions is not limited to the method described in the above embodiment. For example, the first frequency domain resource capable of receiving downlink transmissions includes the continuous frequency domain resource with the largest number of occupied frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource indicated by a network device (for example, the network device may indicate the identifier, frequency domain range, etc., of the frequency domain resource) among all continuous frequency domain resources capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource whose number of occupied frequency domain units is an integer multiple of a first number (for example, 4) among all continuous frequency domain resources capable of receiving downlink transmissions. If multiple resources exist, they can be determined according to other conditions (for example, identifier, starting frequency domain resource unit). For example, the continuous frequency domain resource that satisfies the above conditions and corresponds to the smallest identifier is determined as the first frequency domain resource capable of receiving downlink transmissions. For example, the first frequency domain resource capable of receiving downlink transmissions includes all continuous frequency domain resources capable of receiving downlink transmissions whose identifier is a pre-set identifier (e.g., the smallest identifier or the largest identifier).

[0146] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a discontinuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource may include a discontinuous frequency domain resource unit.

[0147] In other words, if a CSI-RS resource can include discontinuous frequency domain resource units, then a first frequency domain resource capable of receiving downlink transmissions can include discontinuous frequency domain resources capable of receiving downlink transmissions. This does not mean that the first frequency domain resource cannot include continuous frequency domain resources capable of receiving downlink transmissions, but rather that the first frequency domain resource can include both continuous frequency domain resources capable of receiving downlink transmissions and discontinuous frequency domain resources capable of receiving downlink transmissions.

[0148] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband, the network device can determine the number of frequency domain units occupied by all the downlink subbands as the first frequency domain resource.

[0149] For example, if an enabled BWP has only one downlink subband, the network device can determine this downlink subband as the first frequency domain resource. Based on the embodiment shown in Figure 2, an enabled BWP has two downlink subbands, and the two downlink subbands are not contiguous. In this case, if the CSI-RS resource includes a discontinuous frequency domain resource unit, the first frequency domain resource capable of receiving downlink transmissions may be these two downlink subbands.

[0150] Taking Figure 5 as an example, the terminal can determine two downlink subbands, designating them as downlink subband #1 and downlink subband #2. The terminal can then determine downlink subband #1 and downlink subband #2 as a first frequency domain resource capable of receiving downlink transmissions.

[0151] Taking the case where a frequency domain resource unit includes RBs as an example, in Figure 5, for instance, downlink subband #1 contains 12 RBs, downlink subband #2 contains 10 RBs, and the total number of RBs in the two downlink subbands is 22, so the second number is 22. In this case, the network device determines that the minimum number of frequency domain resource units for the CSI-RS resources configured for the terminal is min{24, 22}. Since min{24, 22} is 22, the minimum number of frequency domain resource units for the CSI-RS resources configured for the terminal is 22.

[0152] In one embodiment, if a first frequency domain resource from which a terminal can receive downlink transmissions includes a downlink subband and a guard band, the network device can determine a discontinuous frequency domain resource, including a downlink subband and a guard band, from which downlink transmissions can be received as the first frequency domain resource.

[0153] For example, if a discontinuous frequency domain resource includes downlink subband #1, downlink subband #2, guard band #1, and guard band #2, then downlink subband #1 and guard band #1 connected to downlink subband #1, downlink subband #2, and guard band #2 connected to downlink subband #2 can be determined as a first frequency domain resource capable of receiving downlink transmissions. The second number is equal to the sum of the number of RBs included in downlink subband #1, guard band #1, downlink subband #2, and guard band #2, i.e., 12 + 2 + 10 + 2 = 26. In this case, the network device determines that the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal is min{24, 26}. Since min{24, 26} is 24, the network device determines that the minimum number of frequency domain resource units for the CSI-RS resource configured for the terminal is 24.

[0154] In one embodiment, the resource determination method further includes the step of determining that a second number is an integer multiple of a first number, and the number of frequency domain resource units set for the channel state information reference signal resource is greater than or equal to the second number.

[0155] In one embodiment, the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device is not less than the minimum of the first number and the second number, but the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device may be greater than or equal to the second number.

[0156] On the other hand, if the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device is greater than the second number, the terminal determines that the number of frequency domain resource units of the CSI-RS resources is equal to the second number, that is, the number of frequency domain resource units included in the CSI-RS resources actually used for CSI-RS transmission is equal to the second number, in order to ensure that the CSI-RS resources actually used for CSI-RS transmission do not exceed the frequency domain range in which the terminal can receive CSI-RS.

[0157] Since the number of frequency domain resource units occupied by a CSI-RS resource must be a positive integer multiple of the first number, for example, if the frequency domain resource unit is RB and the first number is 4, the number of RBs occupied by the CSI-RS resource must be equal to 4n, where n is a positive integer. Thus, the terminal can determine that the second number is an integer multiple of the first number, and / or does not expect the second number to be a number other than an integer multiple of the first number. In this case, the second number is an integer multiple of the first number, for example, 4n. In this case, the network device also needs to determine that the second number is an integer multiple of the first number. This ensures that the terminal and the network device have a consistent understanding of the number of frequency domain resource units contained in the CSI-RS resource actually used for CSI-RS transmission, that both are positive integer multiples of the first number, and that the CSI-RS resource actually used for CSI-RS transmission does not exceed the frequency domain range in which the terminal can receive CSI-RS.

[0158] For example, the second number is equal to 8, that is, twice 4, and the number of frequency domain resource units in the CSI-RS resource set up for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of frequency domain resource units contained in the CSI-RS resource actually used for CSI-RS transmission is equal to 8, and the network device can also determine that the number of frequency domain resource units contained in the CSI-RS resource actually used for CSI-RS transmission is equal to 8.

[0159] In one embodiment, the resource determination method further includes the step of determining that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value of a second number that is an integer multiple of a first number, wherein the number of frequency domain resource units set in the channel state information reference signal resource is not equal to an integer multiple of the first number.

[0160] In one embodiment, the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device is not less than the minimum of the first number and the second number, but the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device may be greater than or equal to the second number.

[0161] If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is the maximum integer multiple of the first number that is less than or equal to the second number, that is, the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission is the maximum integer multiple of the first number that is less than or equal to the second number.

[0162] The number of frequency domain resource units occupied by a CSI-RS resource must be a positive integer multiple of the first number. For example, if the frequency domain resource unit is RB and the first number is 4, the number of RBs occupied by the CSI-RS resource must be equal to 4n, where n is a positive integer. On the other hand, if the second number is not an integer multiple of the first number, the network device can determine that the number of frequency domain resource units included in the CSI-RS resource is the maximum integer multiple of the first number that is less than or equal to the second number. This ensures that the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission is a positive integer multiple of the first number, and that the CSI-RS resource actually used for CSI-RS transmission does not exceed the frequency domain range in which the terminal can receive CSI-RS.

[0163] If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than a second number, and the second number is an integer multiple of the first number, the terminal can determine that the number of RBs occupied by the CSI-RS resource is equal to the second number.

[0164] If the number of frequency domain resource units in the CSI-RS resource configured for the terminal by the network device is greater than a second number, and the second number is not an integer multiple of the first number, the terminal can determine a value equal to an integer multiple of the first number from a value less than the second number, determine a maximum value from a value equal to an integer multiple of the first number (for example, 4), and determine that the number of RBs occupied by the CSI-RS resource is equal to that maximum value. The network device can also determine that the number of RBs occupied by the CSI-RS resource is equal to that maximum value, thereby ensuring that the terminal and the network device have a consistent understanding of the number of frequency domain resource units included in the CSI-RS resource actually used for CSI-RS transmission, and that both are at that maximum value.

[0165] For example, the second number is equal to 8, which is a positive integer multiple of 4, and the number of frequency domain resource units of the CSI-RS resource set up for the terminal by the network device is 12, which is greater than 8. In this case, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to 8, and the network device can also determine that the number of frequency domain resource units of the CSI-RS resource is equal to 8.

[0166] For example, the second number is equal to 10, which is not a positive integer multiple of 4, and the number of frequency domain resource units of the CSI-RS resource set up for the terminal by the network device is 12, which is greater than 10. In this case, the terminal can determine 4 and 8, which are values ​​less than 10 and equal to 4, and from 4 and 8 it can determine the maximum value of 8, and then it can determine that the number of RBs occupied by the CSI-RS resource is equal to 8. The network device can also determine that the number of frequency domain resource units of the CSI-RS resource is equal to 8.

[0167] In one embodiment, the resource determination method further includes the step of determining that the number of frequency domain resource units of a channel state information reference signal resource is equal to a second number if the number of frequency domain resource units of the channel state information reference signal resource is greater than a second number.

[0168] In one embodiment, the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device is not less than the minimum of the first number and the second number, but the number of frequency domain resource units of the CSI-RS resources configured for the terminal by the network device may be greater than or equal to the second number.

[0169] On the other hand, if the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number, and the network device can also determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number. This ensures that the network device can transmit CSI-RS to the terminal within the range of the first frequency domain resource in which downlink transmissions can be received, and prevents the network device from transmitting CSI-RS outside the range of the first frequency domain resource in which downlink transmissions can be received, thus preventing the terminal from receiving it.

[0170] In one embodiment, the network device can determine a value equal to an integer multiple of a first number from a value less than or equal to a second number, and determine a maximum value from a value equal to an integer multiple of the first number (for example, 4), and the network device can determine that the number of configurable frequency domain resource units of the CSI-RS resource is greater than or equal to the minimum of the first number and the maximum value.

[0171] For example, the first number is equal to 4, the second number is 24, and the third number is 10. From the values ​​less than or equal to the second number, the network device can determine that the integer multiples of the first number are 8 and 4, with 8 being the maximum value. In this case, the network device can determine that the number of configurable frequency domain resource units for the CSI-RS resource is min{24,8}=8 or greater.

[0172] In one embodiment, the second number is greater than or equal to the first number, the number of configurable frequency domain resource units for the CSI-RS resource is greater than or equal to the minimum of the first and third numbers, and the third number is the number of frequency domain resource units occupied by the BWP on which the first frequency domain resource capable of receiving downlink transmissions is located. If the number of frequency domain resource units of the CSI-RS resource configured for the terminal by the network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number.

[0173] For example, the minimum number of configurable frequency domain resource units for a CSI-RS resource is min{first number, third number}. Since the third number is greater than or equal to the first number, the minimum number of configurable frequency domain resource units for a CSI-RS resource may be the first number. On the other hand, since the third number is greater than or equal to the number of configurable frequency domain resource units for a CSI-RS resource, it is possible to satisfy the condition that the minimum number of configurable frequency domain resource units for a CSI-RS resource is min{first number, third number}, and the minimum number of configurable frequency domain resource units for a CSI-RS resource (first number) is within the range of the number of frequency domain resource units (second number) occupied by the first frequency domain resource from which the terminal can receive downlink transmissions. It is ensured that the number of configurable frequency domain resource units for a CSI-RS resource never exceeds the second number, and that the terminal can receive CSI-RS within the receivable frequency domain range.

[0174] In one embodiment, the number of configurable frequency domain resource units for a CSI-RS resource is greater than or equal to the minimum of a first number and a third number, where the third number is the number of frequency domain resource units occupied by the BWP on which the first frequency domain resource capable of receiving downlink transmissions is located. If the number of frequency domain resource units of a CSI-RS resource configured for a terminal by a network device is greater than the second number, the terminal can determine that the number of frequency domain resource units of the CSI-RS resource is equal to the second number.

[0175] Embodiments of this disclosure further provide resource determination methods performed by a communication system, the communication system including terminals and network devices.

[0176] The terminal is configured to receive a channel state information reference signal, and the number of configurable frequency domain resource units for the channel state information reference signal resource is greater than or equal to the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmissions.

[0177] The network device is configured to determine the minimum number of frequency domain resource units for the channel state information reference signal resource configured for the terminal, based on the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource from which the terminal can receive downlink transmissions.

[0178] In correspondence with the embodiments of the resource determination method described above, this disclosure further provides embodiments of a resource determination apparatus.

[0179] Figure 9 is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. The resource determination device is configured as a terminal device and, as shown in Figure 9, includes the following receiving module 901.

[0180] The receiving module 901 is configured to receive a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units of the channel state information reference signal resource is greater than or equal to the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmissions.

[0181] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a continuous frequency domain resource unit.

[0182] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, on which the starting frequency domain resource unit of the channel state information reference signal resource is located.

[0183] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions.

[0184] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a discontinuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a discontinuous frequency domain resource unit.

[0185] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes at least one of a downlink subband and a guard band.

[0186] In one embodiment, the downlink subband includes at least one of the following: frequency domain resources other than the uplink subband set in the downlink slot; frequency domain resources other than the uplink subband and guard band set in the downlink slot; frequency domain resources other than the uplink subband set in the flexible slot; frequency domain resources other than the uplink subband and guard band set in the flexible slot; the downlink subband set in the uplink slot; and the downlink subband set in the flexible slot.

[0187] In one embodiment, the first number is determined based on a predefined rule, or the first number is set by a network device.

[0188] In one embodiment, the second number is an integer multiple of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number.

[0189] In one embodiment, the processing module is further configured to determine that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value of a second number, which is an integer multiple of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number.

[0190] In one embodiment, the processing module is further configured to determine that the number of frequency domain resource units of the channel state information reference signal resource is equal to the second number if the number of frequency domain resource units of the channel state information reference signal resource is greater than the second number.

[0191] Figure 10 is a schematic block diagram of a resource determination device according to an embodiment of the present disclosure. The resource determination device is configured as a network-side device, and as shown in Figure 10, the resource determination device includes the following processing module 1001.

[0192] The processing module 1001 is configured to determine the minimum number of frequency domain resource units for the channel state information reference signal resource set up for the terminal, based on the minimum of a first number and a second number, where the second number is the number of frequency domain resource units occupied by the first frequency domain resource from which the terminal can receive downlink transmissions.

[0193] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a continuous frequency domain resource unit.

[0194] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions, on which the starting frequency domain resource unit of the channel state information reference signal resource is located.

[0195] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a continuous frequency domain resource capable of receiving downlink transmissions that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions.

[0196] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes a discontinuous frequency domain resource capable of receiving downlink transmissions, and a channel state information reference signal resource includes a discontinuous frequency domain resource unit.

[0197] In one embodiment, a first frequency domain resource capable of receiving downlink transmissions includes at least one of a downlink subband and a guard band.

[0198] In one embodiment, the downlink subband includes at least one of the following: frequency domain resources other than the uplink subband set in the downlink slot; frequency domain resources other than the uplink subband and guard band set in the downlink slot; frequency domain resources other than the uplink subband set in the flexible slot; frequency domain resources other than the uplink subband and guard band set in the flexible slot; the downlink subband set in the uplink slot; and the downlink subband set in the flexible slot.

[0199] In one embodiment, the first number is determined based on a predefined rule, or the first number is set by a network device.

[0200] In one embodiment, the processing module is further configured to determine that the second number is an integer multiple of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number.

[0201] In one embodiment, the processing module is further configured to determine that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value of a second integer multiple of a first number, and the number of frequency domain resource units set in the channel state information reference signal resource is not equal to an integer multiple of the first number.

[0202] In one embodiment, the processing module is further configured to determine that the number of frequency domain resource units of the channel state information reference signal resource is equal to the second number if the number of frequency domain resource units of the channel state information reference signal resource is greater than the second number.

[0203] Since the embodiments of the apparatus largely correspond to the embodiments of the method, relevant parts can be referenced from the description of some of the embodiments of the method. The embodiments of the apparatus described above are merely illustrative; modules described as individual components may or may not be physically separated, and components shown as modules may or may not be physical modules. In other words, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected according to actual needs in order to achieve the objectives of the technical proposal of this embodiment. Those skilled in the art will be able to understand and implement this without creative effort.

[0204] Embodiments of the present disclosure further provide a communication device, the communication device comprising a terminal and a network device, wherein the terminal is configured to implement a resource determination method performed by the terminal described in any one of the embodiments, and the network device is configured to implement a resource determination method performed by the network device described in any one of the embodiments.

[0205] Embodiments of the present disclosure further provide a communication device, the communication device comprising a processor and memory for storing a computer program, wherein when the computer program is executed by the processor, a resource determination method is implemented that is executed by the terminal described in any one of the embodiments above.

[0206] Embodiments of the present disclosure further provide a communication device, the communication device comprising a processor and memory for storing a computer program, wherein when the computer program is executed by the processor, a resource determination method is implemented that is performed by the network device described in any one of the embodiments above.

[0207] Embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, a resource determination method is realized which is executed by the terminal described in any one of the embodiments above.

[0208] Embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, a resource determination method is realized which is executed by a network device as described in any one of the embodiments above.

[0209] As shown in Figure 11, Figure 11 is a schematic block diagram of a device 1100 used in XX according to an embodiment of the present disclosure. The device 1100 may be a base station. Referring to Figure 11, the device 1100 includes a processing component 1122, a radio transmit / receive component 1124, an antenna component 1126, and a signal processing portion specific to the radio interface. The processing component 1122 may further include one or more processors. One processor in the processing component 1122 may be configured to implement a resource determination method performed by the network device described in any one embodiment above.

[0210] Figure 12 is a block diagram of a resource determination device 1200 provided by an embodiment of the present disclosure. For example, the device 1200 may be a terminal such as a mobile phone, computer, digital broadcasting terminal, message sending and receiving device, game console, tablet device, medical device, fitness device, and personal digital assistant.

[0211] Referring to Figure 12, the device 1200 may include one or more of the following: processing component 1202, memory 1204, power supply component 1206, multimedia component 1208, audio component 1210, input / output (I / O) interface 1212, sensor component 1214, and communication component 1216.

[0212] The processing component 1202 typically controls the overall operation of the device 1200, including operations related to display, telephone calling, data communication, camera operation, and recording operation. The processing component 1202 may include one or more processors 1220 for executing instructions to implement all or part of the steps of the resource determination method performed by the terminal described in any one embodiment above. The processing component 1202 may also include one or more modules to facilitate interaction between the processing component 1202 and other components. For example, the processing component 1202 may include a multimedia module to facilitate interaction between the multimedia component 1208 and the processing component 1202.

[0213] Memory 1204 is configured to store various types of data in order to support the operation of device 1200. Examples of this data include instructions for any application programs or methods that operate in device 1200, contact data, phonebook data, messages, images, videos, and the like.

[0214] The power supply component 1206 provides power to various components of the device 1200. The power supply component 1206 may include a power management system, one or more power supplies, and other components related to generating, managing, and distributing power for the device 1200.

[0215] The multimedia component 1208 includes a screen that provides an output interface between the device 1200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen that receives input signals from the user.

[0216] The audio component 1210 is configured to output and / or input audio signals. For example, the audio component 1210 includes one microphone (MIC). When the device 1200 is in an operating mode such as calling mode, recording mode, and voice recognition mode, the microphone is configured to receive external audio signals. The received audio signals are further stored in memory 1204 or transmitted via communication component 1216. In some embodiments, the audio component 1210 further includes a speaker for outputting audio signals.

[0217] The I / O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0218] The sensor component 1214 includes one or more sensors to provide the device 1200 with state evaluations for each embodiment.

[0219] The communication component 1216 is configured to facilitate wired or wireless communication between the device 1200 and other devices. The device 1200 can access wireless networks based on communication standards, such as WiFi, 2G, 3G, 4G LTE, 5G NR, or a combination thereof. In one exemplary embodiment, the communication component 1216 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 1216 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, super wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0220] In an exemplary embodiment, the apparatus 1200 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the resource determination method performed by the terminal described in any one of the embodiments above.

[0221] In an exemplary embodiment, a non-temporary computer-readable storage medium containing instructions is provided, for example, a memory 1204 containing instructions, which can be executed by the processor 1220 of the device 1200 to complete a resource determination method performed by the terminal described in any one of the embodiments above. For example, the non-temporary computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage, etc.

[0222] A person skilled in the art, after considering the specification and practicing the invention disclosed herein, may readily conceive of other embodiments of the Disclosure. This Disclosure is intended to cover any variations, uses, or appropriate changes of the Disclosure, such variations, uses, or appropriate changes, in accordance with the general principles of the Disclosure and including common technical means or conventional techniques in the art not disclosed herein. The specification and examples should be considered merely illustrative, and the true scope and spirit of the Disclosure are indicated by the following claims.

[0223] This disclosure is not limited to the exact configuration described above and shown in the drawings, and various modifications and changes may be made as long as they do not deviate from its scope. The scope of this disclosure is limited only to the attached claims.

Claims

1. A method for determining resources performed by a terminal, The process includes the step of receiving a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units of the channel state information reference signal resource is greater than or equal to the minimum of a first number and a second number, the second number being the number of frequency domain resource units occupied by a first frequency domain resource capable of receiving downlink transmissions. A resource determination method characterized by the following:

2. The first frequency domain resource capable of receiving the downlink transmission includes a continuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource includes a continuous frequency domain resource unit. The resource determination method according to feature 1.

3. The first frequency domain resource capable of receiving the downlink transmission is: The channel state information reference signal resource's start frequency domain resource unit is located in a continuous frequency domain resource capable of receiving downlink transmissions, The resource determination method according to feature 2.

4. The first frequency domain resource capable of receiving the downlink transmission is: The continuous frequency domain resource that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions, The resource determination method according to feature 2.

5. The first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource includes a discontinuous frequency domain resource unit. The resource determination method according to feature 1.

6. The first frequency domain resource capable of receiving the downlink transmission is: Including at least one of a downlink subband and a guard band, The resource determination method according to any one of claims 1 to 5.

7. The downlink subband is, Frequency domain resources other than the uplink subband set in the downlink slot, Frequency domain resources other than the uplink subband and guard band configured in the downlink slot, Frequency domain resources other than the uplink subband configured in the flexible slot, Frequency domain resources other than the uplink subband and guard band configured in the flexible slot, The downlink subband configured in the uplink slot, and Including at least one of the downlink subbands configured in the flexible slot, The resource determination method according to feature 6.

8. The first number is determined based on a predefined rule, or the first number is set by a network device. The resource determination method according to any one of claims 1 to 7.

9. The second number is an integer multiple of the first number, and the number of frequency domain resource units set in the channel state information reference signal resource is greater than or equal to the second number. The resource determination method according to any one of claims 1 to 8.

10. The resource determination method described above is: The step further includes determining that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value among the integer multiples of the first number that is less than or equal to the second number, The number of frequency domain resource units set in the channel state information reference signal resource is equal to or greater than the second number. The resource determination method according to any one of claims 1 to 8.

11. The resource determination method described above is: If the number of frequency domain resource units of the channel state information reference signal resource is greater than the second number, the further step includes determining that the number of frequency domain resource units of the channel state information reference signal resource is equal to the second number. The resource determination method according to any one of claims 1 to 8.

12. A resource determination method performed by a network device, The process includes determining a minimum number of frequency domain resource units for a channel state information reference signal resource configured for a terminal, based on the minimum of a first number and a second number, wherein the second number is the number of frequency domain resource units occupied by the first frequency domain resource from which the terminal can receive downlink transmissions. A resource determination method characterized by the following:

13. The first frequency domain resource capable of receiving the downlink transmission includes a continuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource includes a continuous frequency domain resource unit. The resource determination method according to feature 12.

14. The first frequency domain resource capable of receiving the downlink transmission is: The channel state information reference signal resource's start frequency domain resource unit is located in a continuous frequency domain resource capable of receiving downlink transmissions, The resource determination method according to feature 13.

15. The first frequency domain resource capable of receiving the downlink transmission is: The continuous frequency domain resource that occupies the fewest number of frequency domain units among all continuous frequency domain resources capable of receiving downlink transmissions, The resource determination method according to feature 13.

16. The first frequency domain resource capable of receiving the downlink transmission includes a discontinuous frequency domain resource capable of receiving the downlink transmission, and the channel state information reference signal resource includes a discontinuous frequency domain resource unit. The resource determination method according to paragraph 12, characterized by the features described herein.

17. The first frequency domain resource capable of receiving the downlink transmission is: Including at least one of a downlink subband and a guard band, The resource determination method according to any one of claims 12 to 16, characterized by the features described herein.

18. The downlink subband is, Frequency domain resources other than the uplink subband set in the downlink slot, Frequency domain resources other than the uplink subband and guard band configured in the downlink slot, Frequency domain resources other than the uplink subband configured in the flexible slot, Frequency domain resources other than the uplink subband and guard band configured in the flexible slot, The downlink subband configured in the uplink slot, and Including at least one of the downlink subbands configured in the flexible slot, The resource determination method according to feature 17.

19. The first number is determined based on a predefined rule, or the first number is set by a network device. The resource determination method according to any one of claims 12 to 18.

20. The resource determination method described above is: The process further includes the step of determining that the second number is an integer multiple of the first number, The number of frequency domain resource units set in the channel state information reference signal resource is equal to or greater than the second number. The resource determination method according to any one of claims 12 to 19, characterized by the features described herein.

21. The resource determination method described above is: The step further includes determining that the number of frequency domain resource units included in the channel state information reference signal resource is the maximum value among the integer multiples of the first number that is less than or equal to the second number, The number of frequency domain resource units set in the channel state information reference signal resource is not equal to an integer multiple of the first numerical value. The resource determination method according to any one of claims 12 to 19, characterized by the features described herein.

22. The resource determination method described above is: If the number of frequency domain resource units of the channel state information reference signal resource is greater than the second number, the further step includes determining that the number of frequency domain resource units of the channel state information reference signal resource is equal to the second number. The resource determination method according to any one of claims 12 to 19, characterized by the features described herein.

23. A resource determination device configured in a terminal device, The system includes a receiving module configured to receive a channel state information reference signal based on a channel state information reference signal resource, wherein the number of configurable frequency domain resource units of the channel state information reference signal resource is greater than or equal to the minimum of a first number and a second number, the second number being the number of frequency domain resource units occupied by the first frequency domain resource capable of receiving downlink transmissions. A resource determination device characterized by the following features.

24. A resource determination device configured on a network-side device, The system includes a processing module configured to determine a minimum number of frequency domain resource units for a channel state information reference signal resource set up for a terminal, based on the minimum of a first number and a second number, wherein the second number is the number of frequency domain resource units occupied by the first frequency domain resource from which the terminal can receive downlink transmissions. A resource determination device characterized by the following features.

25. A terminal configured to implement the resource determination method described in any one of claims 1 to 11, A network device configured to implement the resource determination method described in any one of claims 12 to 22, A communication system characterized by the following features.

26. Processor and Includes memory for storing computer programs, When the computer program is executed by a processor, the resource determination method described in any one of claims 1 to 11 is realized. A communication device characterized by the following features.

27. Processor and Includes memory for storing computer programs, When the computer program is executed by a processor, the resource determination method described in any one of claims 12 to 22 is realized. A communication device characterized by the following features.

28. A computer-readable storage medium on which computer programs are stored, When the computer program is executed by a processor, the resource determination method described in any one of claims 1 to 11 is realized. A computer-readable storage medium characterized by the following features.

29. A computer-readable storage medium on which computer programs are stored, When the computer program is executed by a processor, the resource determination method described in any one of claims 12 to 22 is realized. A computer-readable storage medium characterized by the following features.

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